My mother who is a diabetic had undergone a kidney stone removal in her left kidney and a stent was placed. Due to fever her stent was removed in a weeks time but the fever was still there. Drs kept her on antibiotics merupenum and paracetamol IV . Now we have placed the stent again on 15th July and the same medication is continued through an IV in her neck (which was placed on 18th July) but the fever is still there. Blood culture showed aerobic and anaerobic negative. Urgently require suggestion on what to do now. We are really worried now.